diff options
Diffstat (limited to 'board/logicpd/am3517evm/am3517evm.c')
| -rw-r--r-- | board/logicpd/am3517evm/am3517evm.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/board/logicpd/am3517evm/am3517evm.c b/board/logicpd/am3517evm/am3517evm.c index 156990546..24be6eabf 100644 --- a/board/logicpd/am3517evm/am3517evm.c +++ b/board/logicpd/am3517evm/am3517evm.c @@ -22,6 +22,7 @@ #include <asm/arch/musb.h> #include <asm/mach-types.h> #include <asm/errno.h> +#include <asm/gpio.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> #include <linux/usb/musb.h> @@ -31,6 +32,9 @@ DECLARE_GLOBAL_DATA_PTR; +#define AM3517_IP_SW_RESET 0x48002598 +#define CPGMACSS_SW_RST (1 << 1) + /* * Routine: board_init * Description: Early hardware init. @@ -98,6 +102,9 @@ static void am3517_evm_musb_init(void) */ int misc_init_r(void) { + volatile unsigned int ctr; + u32 reset; + #ifdef CONFIG_SYS_I2C_OMAP34XX i2c_init(CONFIG_SYS_OMAP24_I2C_SPEED, CONFIG_SYS_OMAP24_I2C_SLAVE); #endif @@ -106,6 +113,31 @@ int misc_init_r(void) am3517_evm_musb_init(); + /* activate PHY reset */ + gpio_direction_output(30, 0); + gpio_set_value(30, 0); + + ctr = 0; + do { + udelay(1000); + ctr++; + } while (ctr < 300); + + /* deactivate PHY reset */ + gpio_set_value(30, 1); + + /* allow the PHY to stabilize and settle down */ + ctr = 0; + do { + udelay(1000); + ctr++; + } while (ctr < 300); + + /* ensure that the module is out of reset */ + reset = readl(AM3517_IP_SW_RESET); + reset &= (~CPGMACSS_SW_RST); + writel(reset,AM3517_IP_SW_RESET); + return 0; } |